| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 3972 | Cryptographically Generated Addresses (CGA)T. Aura | Proposed Standard | March 2005 |
| 4025 | A Method for Storing IPsec Keying Material in DNSM. Richardson | Proposed Standard | March 2005 |
| 4034 | Resource Records for the DNS Security ExtensionsR. Arends, R. Austein, M. Larson, D. Massey, S. Rose | Proposed Standard | March 2005 |
| 4122 | A Universally Unique IDentifier (UUID) URN NamespaceP. Leach, M. Mealling, R. Salz · obsoleted by RFC 9562 | Proposed Standard | July 2005 |
| 4303 | IP Encapsulating Security Payload (ESP)S. Kent | Proposed Standard | December 2005 |
| 5280 | Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) ProfileD. Cooper, S. Santesson, S. Farrell, S. Boeyen, R. Housley, W. Polk | Proposed Standard | May 2008 |
| 6890 | Special-Purpose IP Address RegistriesM. Cotton, L. Vegoda, R. Bonica, Ed., B. Haberman | Best Current Practice | April 2013 |
| 7343 | An IPv6 Prefix for Overlay Routable Cryptographic Hash Identifiers Version 2 (ORCHIDv2)J. Laganier, F. Dupont | Proposed Standard | September 2014 |
| 7401 | Host Identity Protocol Version 2 (HIPv2)R. Moskowitz, Ed., T. Heer, P. Jokela, T. Henderson | Proposed Standard | April 2015 |
| 7841 | RFC Streams, Headers, and BoilerplatesJ. Halpern, Ed., L. Daigle, Ed., O. Kolkman, Ed. | Informational | May 2016 |
| 8004 | Host Identity Protocol (HIP) Rendezvous ExtensionJ. Laganier, L. Eggert | Proposed Standard | October 2016 |
| 8005 | Host Identity Protocol (HIP) Domain Name System (DNS) ExtensionJ. Laganier | Proposed Standard | October 2016 |
| 8032 | Edwards-Curve Digital Signature Algorithm (EdDSA)S. Josefsson, I. Liusvaara | Informational | January 2017 |
| 8126 | Guidelines for Writing an IANA Considerations Section in RFCsM. Cotton, B. Leiba, T. Narten | Best Current Practice | June 2017 |
| 8174 | Ambiguity of Uppercase vs Lowercase in RFC 2119 Key WordsB. Leiba | Best Current Practice | May 2017 |
| 8200 | Internet Protocol, Version 6 (IPv6) SpecificationS. Deering, R. Hinden | Internet Standard | July 2017 |
| 9063 | Host Identity Protocol ArchitectureR. Moskowitz, Ed., M. Komu | Informational | July 2021 |
| 9153 | Drone Remote Identification Protocol (DRIP) Requirements and TerminologyS. Card, Ed., A. Wiethuechter, R. Moskowitz, A. Gurtov | Informational | February 2022 |
| 9224 | Finding the Authoritative Registration Data Access Protocol (RDAP) ServiceM. Blanchet | Internet Standard | March 2022 |
| 9373 | EdDSA Value for IPSECKEYR. Moskowitz, T. Kivinen, M. Richardson | Proposed Standard | March 2023 |